Improve description of backend responsibilities.

wiki/src/blueprint/translation_platform.mdwn

@@ -26,13 +26,14 @@ Team responsabilities:
 
 Backend responsibilities:
 
-- Upgrade Weblate.
-- Fix crashes.
-- Monitor server's error messages.
+- Maintain and upgrade Weblate.
 - Maintain and improve the integration with main website.
-- Maintain and improve the staging website.
-- Maintain our documentation up-to-date.
-   
+- Maintain and improve the generation of the staging website.
+- Maintain technical documentation up-to-date.
+- Monitor error messages (Weblate, server, integrations).
+- Implement backend changes needed for the translation workflow.
+- Fix crashes in the whole setup.
+
 Frontend responsibilities:
 
 - Facilitate the process of adding new languages for translation: